Alzheimer disease most commonly affects older adults, but it can also affect people in their 30s or 40s. When Alzheimer disease occurs in someone under age 65, it is known as early-onset (or younger-onset) Alzheimer disease....more

Alzheimer disease is a progressive condition, which means that it keeps getting worse. Eventually, people with Alzheimer disease need help with daily activities because they lose the ability to dress, bathe, and feed themselves....more